For those that are interested it appears that you can connect a usb microphone to this kit, also jack type if you get the imic conection. if you want to know a little more use the link below. This a youtube clip i came across, thought it might help some, hopefully we get to use more stuff through the usb connection, im sure we will see stuff before long. Glad i got my set, got mine from apple uk on pre order, looks like most shops still do not have them as yet.
[ame=http://www.youtube.com/watch?v=cWVXsNJEL0M]YouTube - iPad Camera Kit Secrets... Microphone Magic[/ame]